ALASKAN GLACIER STUDIES
which is severely crevassed from side to side, is stained by one rather strong medial moraine, while a narrow lateral moraine extends along the northern side, and a broad lateral moraine along the southern side.
Retreat. Between 1899, when Gannett mapped Surprise Glacier, and our visit in 1910, the ice front retreated about 6500 feet (Fig. 47). In 1899 the dark-colored southern edge
. 47. LOWEE ENDS OF STJKPIUBB, CATABACT, DETACHED AND BAKHB GLAOIEBS IN 1910.
of the terminus just coalesced with the western edge of Cataract Glacier 1 (PL CXXIX, A). In 1910 a pronounced cape projected forward a thousand feet, just north of the* middle of the glacier front, and on its southern side two rock ledges were visible
i This fact, shown both on Gannett's map and the Harriman Expedition photograph, must have been overlooked by Grant and Biggins in their statement that in 1899 the two glaciers were separated a quarter off a mile.